An extension was granted by Westminster Magistrates Court on Saturday (July 20) which gave officers seven days to question the Ukrainian national.

Mohammed Saleem

Assistant chief constable Marcus Beale is leading the operation.

He said: “I would like to thank the public for their ongoing support and the way in which they responded to our appeals for help with each of these crimes.

“The murder of Mohammed Saleem now forms part of the wider West Midlands Counter Terrorism Unit inquiry and will be thoroughly investigated.

“I appreciate that there has been significant disruption whilst experts search each of the affected locations, but equally I hope that people understand the need to both ensure public safety whilst conducting a thorough investigation."

Anyone with information which may help detectives with the ongoing major investigation should call police on 101 or the independent crime fighting charity Crimestoppers anonymously on 0800 555 111.